Yogi Berra, one of the keenest observers of the human condition, once remarked, "It is tough to make predictions, especially about the future." And, so it is.
Between the middle of last December and the middle of March, the Dollar Index rallied 14.7%. It then fell 6.2%. A 50% retracement would bring it to 94.00, which had generally provided support in the second half of February. It was from that that the Dollar Index staged a new leg up that carried it to 100.40 over the next few weeks.